make_manifest() helper on Collection drops homepage property when provided

[markpbaggett]

Expected behaviour:

In order to use iiif-prezi3 to easily iterate over a list of manifests and create a new Collection manifest, I'd like to use the make_manifest() helper. Doing something simple like this should allow me to create a list of manifests with an id, label, homepage, and thumbnail.

        for document in self.iiif_works:
            collection.make_manifest(
                id=document['manifest'],
                label={'en': document['sourceResource']['title']},
                homepage=[{
                    'id': document['isShownAt'],
                    'label': {'en': document['sourceResource']['title']},
                    'type': 'Text',
                    "language": ["en"],
                    "format": "text/html"}],
                thumbnail={
                    'id': document['object'].replace('http://', 'https://'),
                    "type": "Image",
                    "format": "image/jpeg"
                }
            )

Observed behaviour:

Unfortunately, when using this helper method, the homepage property is always dropped from the resulting Collection.

Potential bug location(s):

Any other comments:

A thread about this was brought up a few days ago here:
https://iiif.slack.com/archives/C04EWD70FCH/p1696253869888859